UV printing is a form of digital printing that uses ultra-violet lights to dry or cure ink as it is printed. As the printer distributes ink on the surface of a material (called a "substrate"), specially designed UV lights follow close behind, curing - or drying - the ink instantly.7
Varnish. In the production of printing ink, varnish can refer to either a combination of oils, resins, waxes, solvents and other materials used as an ink vehicle. The use of varnish tends to increase the gloss of a printed ink.